﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class Admin_Default2 : System.Web.UI.Page
{
    public static int i = 1;
    protected void Page_Load(object sender, EventArgs e)
    {
        drop.SelectedIndexChanged += new EventHandler(drop_SelectedIndexChanged);
        busSinhVien busSV = new busSinhVien();
       
    }

    void drop_SelectedIndexChanged(object sender, EventArgs e)
    {
        txt.Text = (i++).ToString();
        System.Threading.Thread.Sleep(3000);
        
    }
    protected void btn_Click(object sender, EventArgs e)
    {
        System.Threading.Thread.Sleep(3000);
    }
}